AUTOHELM Z219 Manuale utente
Z219 ST80 Active Wind Transducer Service Procedures
D2720-1
ST80 Active Wind Transducer
ST80ActiveWindServiceProcedures 83067-1 1
Z219
CE MARKING OF EQUIPMENT/REPLACEMENT PARTS
WARNING
If the Autohelm equipment under repair, test, calibration, installation or
setting to work carries the European CE mark, only parts and compo-
nentssuppliedorapprovedforsuchusebyAutohelmshouldbeusedin
order to maintain compliance with the relevant CE requirements.
Incorporation, use or attachment, by any means, of parts or components
not supplied for or not approved for such use by Autohelm or, if supplied
or approved for use by Autohelm, not properly fitted in accordance with
instructionspublished,providedorrecommended byAutohelm,may
cause the equipment to malfunction and, in particular, to become unsafe
or to no longer meet the relevant CE requirements. In these circum-
stances,RaytheonMarineEuropeLtdexcludesliabilitytothefullestextent
permissible in law for any loss or damage including any liability for its
contribution to such loss or damage by its negligent acts or omissions .
ST80 Active Wind Transducer
2 ST80ActiveWindServiceProcedures 83067-1
Z219
Contents 1. Description ....................................................................5
2. Operation ......................................................................5
3. Disassembly...................................................................6
4. Assembly .......................................................................7
5. Functional Test ...............................................................9
5.1 Preliminary Inspection ........................................................9
5.2 Test Equipment ..................................................................9
5.3 Functional Test Flowchart................................................. 10
6. Spares Numbers ..........................................................11
7. Circuit Description .......................................................12
7.1 Power Supplies................................................................12
7.2 External Signals ...............................................................13
SeaTalk............................................................................... 13
Anemometer....................................................................... 13
Wind Vane ...........................................................................13
Connector Signals (Main PCB) ..............................................14
SeaTalk Cable ................................................................... 14
PL1 (Wind Vane) ................................................................14
PL2 (Anemometer) ............................................................ 14
7.3 Signal Processing............................................................15
Microprocessor...................................................................15
Autohelm ASIC .................................................................... 15
8. PCB Details..................................................................17
8.1 PCB Layout ..................................................................... 17
8.2 PCB Component Lists ......................................................19
Anemometer PCB, Components......................................... 19
Vane PCB, Components.....................................................19
Main PCB, Surface Mount Components, component side ....19
Main PCB, Conventional Components, component side .......19
ST80 Active Wind Transducer
ST80ActiveWindServiceProcedures 83067-1 3
Z219
Main PCB, Surface Mount Components, underside..............19
Main PCB, Conventional Components, underside.................20
Illustrations
Figure 1 Exploded View...............................................................8
Figure 2 Test Equipment Connection............................................9
Figure 3 Block Diagram ............................................................ 16
Figure 4 Component Layout......................................................17
Figure 5 Circuit Diagram........................................................... 18
ST80 Active Wind Transducer
4 ST80ActiveWindServiceProcedures 83067-1
Z219
1. Description
This section of the Maintenance Manual covers the servicing procedures
for the ST80 Active Wind Transducer, Product Code Z219.
The transducer measures wind speed and direction using an anemometer
cupassembly and a windvane,each mounted on independentshaftsat
either end of a pod containing electronic circuitry.
Electronicsignals generatedbyan opto-electric integratedcircuitand a
mechanical interrupter coupled to a shaft on which a cup assembly ro-
tates.When the cups are drivenbythe wind the generated signalsare
convertedintodatarepresentingwindspeed.
The wind vane rotates on a shaft to which a magnet is attached. Hall effect
integrated circuits detect the position of the magnet in two orthagonal
axes, and the output signals of the circuits are converted to data repre-
senting the position of the wind vane.
Position and speed data are broadcast on the SeaTalk bus at one - second
intervals, thus becoming available to other elements of the system.
Parametersdefining upper and lower limitsofwind speed and angle, both
true and apparent, can be entered (through other elements of the system)
tocause alarmsto begenerated whena specifiedlimitisexceeded.
Alarms are also broadcast on the SeaTalk bus at intervals of one second
while the alarm condition exists.
2. Operation
Thereare nooperationalactivities requiredtoprepare theActiveWind
Transducer for servicing.
ST80 Active Wind Transducer
ST80ActiveWindServiceProcedures 83067-1 5
Z219
3. Disassembly
Referto Figure 1,ExplodedView.
When handling any of the PCBs, linen or other suitable material (
not
nylon)
gloves should be worn if an anti - static mat and grounding strap are not
used.If glovesarenotavailable, handle thePCB by theedges only.
1. Releasethe grubscrews(12) holdingthewind vane(1)and anemom-
eter cup assemblies (11). Back the screws just enough to free the
assemblies without allowing the nuts (4) to fall out. Remove the vane
andcupassemblies
2. Pulltheanemometer head (10) out of the main body (8) andunplugthe
ribbon cable (5) from PL1. To release the cable, lift the top bar of the
connectorandslipthecable free(see detailin Figure1)
3. Pullthe wind vanehead (2) outofthe main body(8) and unplugthe
ribbon cable (5) from PL1. To release the cable, lift the top bar of the
connectorandslipthecablefree(SeedetailinFigure1)
4. Slidethe PCB (7)out of themainbody through thetop (wind vaneend)
5. To release the PCB, unsolder the SeaTalk cable (6) from the contact
pads(seedetailonFigure1).
ST80 Active Wind Transducer
6 ST80ActiveWindServiceProcedures 83067-1
Z219
4. Assembly
Referto Figure 1,ExplodedView.
When handling any of the PCBs, linen or other suitable material (
not
nylon)
gloves should be worn if an anti - static mat and grounding strap are not
used.If glovesarenotavailable, handlethePCB bytheedges only.
1. SoldertheSeaTalkcable(6) tothemainPCB(7)contactpads(see
detail, Figure 1 for cable colours and connections)
2. Lift the top bars of main PCB connectors PL1 and PL2 and insert the
ribboncables(5). Press the bars down tosecurethecables (see detail
in Figure 1). For both connectors on the PCB, the coloured side of the
cable faces the centre of the PCB
3. Slidethe PCB intothe main body (8)fromthe top (windvane end),
threading the lower ribbon cable through as the PCB enters. The PCB
is tapered and fits narrow end first
4. CheckthattheO-rings(3)ontheanemometer(10)andwindvane(2)
heads are not damaged, distorted or loose and are free of grease and
dirt.Replaceorcleanas necessary
5. Plugthelower ribbon cable (5) into PL1 of the anemometer PCB(9)
(see detail in Figure 1), ensuring that the cable is not twisted. The
coloured side of the cable faces the outer edge of the board
6. Push the anemometer head (10) into the main body (8), ensuring that
thehead isfullyhome andtheribbon cable(5)is nottwisted
7. Plugthe lowerribboncable (5)intoPL1 ofthewind vanePCB(4) (see
detail in Figure 1), ensuring that the cable is not twisted. The coloured
side of the cable faces the outer edge of the board
8. Pushthewind vane head (2) into themainbody,ensuringthat the head
isfullyhome and the ribbon cable (5)isnottwisted
9. Fit the cup assembly (11) to the lower shaft and the wind vane (1) to the
upper shaft. Insert and tighten the grub screws (12). Check that the
vane and cups rotate freely in both directions.
ST80 Active Wind Transducer
ST80ActiveWindServiceProcedures 83067-1 7
Z219
1. Wind vane
2. Wind vane head
3. 'O' ring (2 off)
4. Nut
5. Ribbon cable
6. SeaTalk cable
7. Main PCB
8. Body
9. Anemometer head
10. Cup assembly
Ribbon connector detail
Open
position
Closed
position
Red Screen
Yellow
4
1
11
2
3
PL1
5
5
7
PL1
PL2
PL1
9
3
10
11
4
D2711-1
8
6
Figure1ExplodedView
ST80 Active Wind Transducer
8 ST80ActiveWindServiceProcedures 83067-1
Z219
5. Functional Test
5.1Preliminary Inspection
Beforetesting,inspecttheequipmentforphysicaldamage(crackedor
broken case, bent/corroded/burnt connector pins, etc.). Clean off any
grease, dirt or deposits in or on the equipment.
Check for signs of water ingress. Check for damage to the pod PCB, in
particular, overheating on the power supply input pinsandPCBtracks.
5.2 Test Equipment
4
D2712-1
+
+
1352
1. Known good ST80 wind head
2. Daisychain cable
3. Power cable
4. 5A Fuse/circuit breaker
5. 12V 5A power supply
6. ST80 Active wind
transducer under test
6
Figure2TestEquipmentConnection
ST80 Active Wind Transducer
ST80ActiveWindServiceProcedures 83067-1 9
Z219
5.3Functional TestFlowchart
CONNECT POWER AND SWITCH ON.
SET APPARENT WIND SPEED
N
Y
OK
CHANGE PCB
& RESTART
POWER OFF; END OF TEST
CHECK DISPLAY SHOWS ZERO
SPEED, NOT BLANK OR DASHES
00.0
N
Y
OK
CHECK CONNECTING
CABLES
ROTATE ANEMOMETER, CHECK
LCD RESPONDS BY INDICATING
A WIND SPEED
N
Y
OK
OK
N
Y
OK
OK
ROTATE WINDVANE, CHECK
INSTUMENT POINTER FOLLOWS
VANE MOVEMENTS
KTS
app
CHECK CONNECTING
CABLES
CHECK CONNECTING
CABLES & RETRY
N
N
Y
Y
CORRECT FAULT
& RESTART
CORRECT FAULT
& RESTART
CHANGE PCB
& RESTART
CORRECT FAULT
& RESTART
CHANGE PCB
& RESTART
ST80 Active Wind Transducer
10 ST80ActiveWindServiceProcedures 83067-1
Z219
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